Kernel: Subtract

Functions
VX_API_ENTRY vx_node VX_API_CALL	vxSubtractNode (vx_graph graph, vx_image in1, vx_image in2, vx_enum policy, vx_image out)
	[Graph] Creates an arithmetic subtraction node.
VX_API_ENTRY vx_status VX_API_CALL	vxuSubtract (vx_context context, vx_image in1, vx_image in2, vx_enum policy, vx_image out)
	[Immediate] Performs arithmetic subtraction on pixel values in the input images.

Detailed Description

Function Documentation

vxSubtractNode()

VX_API_ENTRY vx_node VX_API_CALL vxSubtractNode	(	vx_graph	graph,
		vx_image	in1,
		vx_image	in2,
		vx_enum	policy,
		vx_image	out )

#include <vx_nodes.h>

[Graph] Creates an arithmetic subtraction node.

Parameters

[in]	graph	The reference to the graph.
[in]	in1	An input image, VX_DF_IMAGE_U8 or VX_DF_IMAGE_S16, the minuend.
[in]	in2	An input image, VX_DF_IMAGE_U8 or VX_DF_IMAGE_S16, the subtrahend.
[in]	policy	A VX_TYPE_ENUM of the vx_convert_policy_e enumeration.
[out]	out	The output image, a VX_DF_IMAGE_U8 or VX_DF_IMAGE_S16 image, which must have the same dimensions as the input images.

Returns

vx_node.

Return values

vx_node

A node reference. Any possible errors preventing a successful creation should be checked using vxGetStatus

Examples

bubble_pop.cpp, and skinToneDetector.cpp.

vxuSubtract()

VX_API_ENTRY vx_status VX_API_CALL vxuSubtract	(	vx_context	context,
		vx_image	in1,
		vx_image	in2,
		vx_enum	policy,
		vx_image	out )

#include <vxu.h>

[Immediate] Performs arithmetic subtraction on pixel values in the input images.

Parameters

[in]	context	The reference to the overall context.
[in]	in1	A VX_DF_IMAGE_U8 or VX_DF_IMAGE_S16 input image, the minuend.
[in]	in2	A VX_DF_IMAGE_U8 or VX_DF_IMAGE_S16 input image, the subtrahend.
[in]	policy	A vx_convert_policy_e enumeration.
[out]	out	The output image in VX_DF_IMAGE_U8 or VX_DF_IMAGE_S16 format.

Returns

A vx_status_e enumeration.

Return values

VX_SUCCESS	Success
*	An error occurred. See vx_status_e.